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M. S. M UM. VEHIGLE EL.

No. 422,136. Patented Feb. 25, 1890,

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UNITED STATES PATENT OFFICE.

MICHAELS. MANUM, OF HARRISBURG, PENNSYLVANIA.

VEHICLE-WHEEL.

SPECIFICATION forming part of Letters Patent No. 422,136, dated February 25, 1890.

Application filed $eptemben21, 1889. Serial No. 324,609. (No model.) i

To all whom it may concern.-

Be it known that I, MICHAEL S. MANUM, a citizen of the United States, residing at Harrisburg, in the county of Dauphin, State of Pennsylvania, have invented certain new and useful Improvements in vehicle-l/Yheels, of I which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates to certain new and useful improvements in vehicle-wheels, more particularly to the construction of the spokes and their manner of attachment to the hub.

It has for its object, among others, to provide a spoke which when once driven into its mortise in the hub will not pull out when the wheel is strained and which tends to make a solid wheel.

The novelty in the present instance resides in the peculiarities of construction and the combinations, arrangement, and adaptation of parts, all as more fully hereinafter described, shown in the drawings, and then particularly pointed out in the appended claims.

The invention is clearly illustrated in the accompanying drawings, which, with the letters of reference marked thereon, form apart of this specification, and in which Figure 1 is'a central longitudinal section through the hub of a wheel embodying my improvements. Fig.2 is a side View of the mortise end of a spoke. Fig. 3 is an edge view of the form of spoke shown in Fig. 2. Fig. 4: is a side view of another form of spoke. Fig. 5 is a longitudinal section through the same. Fig. 6 is a side view of still another form of spoke. of. Fig.8 is a side view of still another form of spoke, designed more particularly for iron hubs; and Fig. 9 is a longitudinal section through the spoke shown in Fig. 8.

Referring now to the details of the draw; ings by letter, A designates ahub, which may be of any suitable construction, provided, preferably, with a band A, preferably of metal; or this portion A may, if desired, be an integral portion of the hub. This hub is formed with suitable spoke-receiving sockets or mortises, the shape of which will correspond to the shape of the spoke-tenon.

I have shown in the drawings from Figs. 2 to 9 the shape of the various forms of tenons,

Fig. 7 is a longitudinal section there-' but have not shown the various forms of mor tises or sockets therefor, as it will be readily understood from the form of tenon what the shape of the mortise would be to receive the tenon.

The spoke shown'in Fig. 2 has a tenon Which is dovetailed in two directions from a line drawn through the center of the spoke longitudinally, being thickest at the center and tapering from said center in both directions to the edge.

The spoke shown in Figs. 4 and 5 is thinnest at the center of its tenon and tapers outwardly from said centerin opposite directions, being formed with a shoulder a at the outer end of the tenon and upon the sides of the tenon extending from said shoulder toward the end tapered toward the longitudinal center of the spoke and also toward the tenon, as indicated at b in Figs. land 5.

The form of spoke shown in Figs. 6 and 7 is designed more especially for use in Wheels for fire-engines and other like heavy appliances, and is similar to the form shown in Figs. 4 and 5, being tapered from the center outwardly, as shown at c, and with the taper d, similar to the taper b, but is formed without the abrupt shoulder shown in Fig. 5, having instead thereof an enlargement, as at e, the longitudinal tapered portions being also tapered longitudinally, as shown at f in Fig. 7. v

In Fig. 8 I have shown a spoke designed more especially to be used in connection with metallic hubs. This has its outer end portion of its tenon similar to the tenon sho'wnin Figs. 2 and 3, being dovetailed in opposite directions from itscenter, and above said portion is formed a square shoulder g, beyond which is a tenon similar to that shown in Figs. 6 and 7, having the double taper h and the taper i, similar to the tapers b and (Z, as shown clearly in said Figs. 8 and 9, thus forming a hub combining the tenons of Figs. 2, 4,and 6. In use this spoke (shown in Figs. 8 and 9) is driven into its socket, the end tenon fitting the wood portion of the hub and the other portion of the tenon (indicated by the reference-letters h and i) fitting the mortise in the metallic portion, the shoulder g engaging a shoulder in the mortise of the hub.

The spoke-tenons are driven into their sockets in the hub in any suitable manner by the of the spoke extending toward the end of the spoke and tapered toward the longitudinal center thereof, substantially as described.

, 2. A spoke having a tenon with a shoulder and tapered in opposite directions from its longitudinal center between said shoulder and the end of the tenon, and with tapered portions upon opposite sides of the spokes and tapered toward the tenon and toward the longitudinal center of the spoke, substantially as described.

3. A spoke having a tenon formed substantially at its longitudinal center with a shoulder 9 and tapered in opposite directions from its longitudinal center, and also tapered upon opposite sides of said shoulder, the tapers H,

extending in opposite directions from the longitudinal center of the spoke, and the taper 1', extending toward the end of the spoke and toward said longitudinal center, substantially as shown and described.

In testimony whereof I afliX my signature in presence of two witnesses.

MICHAEL S. MANUM ,VVitnesses:

L. R. POFFENBERGER, EUGENE SNYDER. 

